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(11)

EP 3 672 881 A1

(12)

(43) Date of publication: 01.07.2020 Bulletin 2020/27 (21) Application number: 18848027.1 (22) Date of filing: 23.08.2018

(51) International Patent Classification (IPC):  B65C 7/00(2006.01) G06K 7/10(2006.01) H01M 4/96(2006.01) H05B 7/14(2006.01) H05B 7/09(2006.01) G06K 19/07(2006.01) G09F 3/12(2006.01) H05B 7/07(2006.01) H05B 7/085(2006.01) (86) International application number: PCT/US2018/047697 (87) International publication number: WO 2019/040715 (28.02.2019 Gazette 2019/09)

(84) Designated Contracting States: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR Designated Extension States: BA ME Designated Validation States: KH MA MD TN (30) Priority: 25.08.2017 US 201762550242 P (71) Applicant: GrafTech International Holdings Inc. Brooklyn Heights, OH 44131 (US)	(72) Inventors: TONIOLO, Pablo Avon OH 44011 (US) GERHAN, Ronald Vermilion OH 44089 (US) PAUL, Ryan Lakewood OH 44107 (US) MERZLAK, James Medina OH 44256 (US) MESSINEO, Frank, Andrew, Jr. Ridgway PA 15853 (US) (74) Representative: TL Brand & Co  50 Eastcastle Street London W1W 8EA London W1W 8EA (GB)